Download the 326.41 Beta driver, it offers support for Windows 8, Windows Vista, Windows XP and Windows 8.1 both 32 and 64-bit. This is a developer driver and seems to add Opengl 4.3 support. This driver enables GeForce to SHIELD streaming and is also a recommended driver update for the Windows 8.1 Preview. GeForce R326 drivers also provide performance increases for a variety of different games.
